This account-deletion page ships no X-Frame-Options and no Content-Security-Policy: frame-ancestors, so it can be framed and click-hijacked — the missing header is the finding (confirm with curl -I /m05/danger-zone). Merely loading this page marks it.
The delete action lives at /m05/account/delete and is registered for DELETE — but it honours _method=DELETE and X-HTTP-Method-Override, so a plain POST form (all an attacker can send cross-site) reaches it anyway.